Chollima Hunter

← Remote Workers

https://github.com/call-by

https://github.com/call-by is a GitHub account that 3 published sources report in connection with IT Worker Fraud activity, which public reporting attributes to North Korea (DPRK). It is cited here from Lazarus Group DPRK IT-Worker Registry (lazarus.group), tayvano (lazarus-bluenoroff-research) and Chollima Group. The earliest of those reports is dated 2025-02-18 and the most recent 2026-10-18.

The reporting files it under the persona Kang Tae Bok, alongside 11 other identifiers attributed to the same identity. The persona page shows them together with any accounts, photographs and CV recorded under that name. A persona name is the one an account presented under, and may belong to an uninvolved person whose identity was taken.

github profile IT Worker Fraud MATCHED IN SOURCE removed checked 2026-08-30

Listed as call-by

First seen 2025-02-18 · last seen 2026-10-18

Sources

  • Entry in the lazarus.group DPRK IT-worker registry, which asserts that these accounts belong to one operator. The registry publishes no methodology, so this is recorded as its claim and not as a finding of this site. Its evidence links and its cross-references to other operators in the same registry are deliberately not reproduced as indicators.
    lazarus.group/team/joshua-palmer — Lazarus Group DPRK IT-Worker Registry (lazarus.group) · under “Kang Tae Bok / Joshua Palmer / 0xjsmart / call-by / jp-smart / wewecalibrate / joshupgig” · pulled 2026-09-09
  • …Wong Shao Onn - 0xjsmart - call-by - jp-smart - wewecalibrate - joshupgig - github.com/call-by - github.com/wewecalibrate - github.com/jp-smart • [Archive](https://archive.ph/grqjk) - joshupgig@gmail.com -…
    DPRK IT Workers — tayvano (lazarus-bluenoroff-research) · under “Joshua Palmer” · published 2025-06-19 · pulled 2026-08-30
  • …github.com/Hiccup19940325 github.com/neverm25 github.com/seosigoto github.com/JCollinsX github.com/mtfuji25 github.com/supermutexc github.com/call-by Persona Names: Seo Kiwon Seo Sigoto Jenson Collins Kazune Takeda Joe Hisaishi George Takeo Kei Nakano Steven Chen Lucas Steve…
    From Vientiane to Vladivostok — Chollima Group · under “Conclusion:” · published 2025-02-18 · pulled 2026-09-12

Find this indicator in the index, or see every GitHub account this site holds under GitHub accounts in the browse listing.

Related indicators

Same persona record: Kang Tae Bok

Other identifiers the reporting files under the same persona; 8 of 11 are shown.

All 11 on the Kang Tae Bok page

Cited by the same report: lazarus.group/team/joshua-palmer

Lazarus Group DPRK IT-Worker Registry (lazarus.group) lists 11 other indicators in this source. 2 are shown, chosen across types.

All 12 indicators from this source

Cited by the same report: DPRK IT Workers

tayvano (lazarus-bluenoroff-research) lists 854 other indicators in this source. 1 are shown, chosen across types.

All 855 indicators from this source

Cited by the same report: From Vientiane to Vladivostok

Chollima Group lists 40 other indicators in this source. 1 are shown, chosen across types.

All 41 indicators from this source

Disclaimer An entry here is not proof of DPRK affiliation or wrongdoing. A listed name, account or address may belong to an uninvolved person, so each entry is a lead to verify independently. What inclusion means. See the sourcing methodology.